Cho tam giác có diện tích bằng . Gọi , là hai điểm thỏa mãn , . Tính diện tích theo .     

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Dân ta có một lòng nồng nàn yêu nước. Đó là
  
• Read the passage carefully and choose the correct answers
  Today's cars are smaller, safer, cleaner, and more economical than their predecessors, but the car of the future will be far more pollution-free than those on the road today. Several new types of automobile engines have already been developed that run on alternative sources of power, such as electricity, compressed natural gas, methanol, steam, hydrogen, and propane. Electricity, however, is the only zero-emission option presently available.
  Although electric vehicles will not be truly practical until a powerful, compact battery or other dependable source of current is available, transportation experts foresee a new assortment of electric vehicles entering everyday life: shorter-range commuter electric cars, three-wheeled neighborhood cars, electric delivery vans, bikes, and trolleys.
  As automakers work to develop practical electrical vehicles, urban planners and utility engineers are focusing on infrastructure systems to support and make the best use of the new cars. Public charging facilities will need to be as common as today's gas stations. Public parking spots on the street or in commercial lots will need to be equipped with devices that allow drivers to charge their batteries while they stop, dine, or attend a concert. To encourage the use of electric vehicles, the most convenient parking in transportation centers might be reserved for electric cars.
  Planners foresee electric shuttle buses, trains, buses, and neighborhood vehicles all meeting at transit centers that would have facilities for charging and renting. Commuters will be able to rent a variety of electric cars to suit their needs: light trucks, one-person three-wheelers, small cars, or electric/gasoline hybrid cars for longer trips, which will no doubt take place on automated freeways capable of handling five times the number of vehicles that can be carried by a freeway today.
  Question. The word "commuters" in paragraph 4 refers to ______
  

• Nghiệm của phương trình là:                 

• Tìm tất cả các giá trị thực của tham số để đồ thị hàm số có hai điểm cực trị sao cho đường thẳng vuông góc với đường thẳng : .

• ___________ has the work been so easy.

• Lượng được chia thành

• Suppose you want to go out during a lecture, what should you do?

• Những nội dung nào sau đây không phải là yếu tố của tư liệu lao động?
  

• Hòa tan hết m gam hỗn hợp X gồm và BaO (oxi chiếm 8,75% về khối lượng) vào thu được 400 ml dung dịch Y và 1,568 lít (đktc). Trộn 200ml dung dịch Y với 200ml dung dịch hỗn hợp gồm HCl 0,2M và thu được 400ml dung dịch có pH = 13. Các phản ứng xảy ra hoàn toàn. Giá trị m gần nhất với giá trị nào sau đây?

• Harry is a sailor. He spends most of his life at ______ see.